Saint Saturninus of Toulouse was, according to the early Acts of his life used by Gregory of Tours, one of the 72 disciples of Christ, and was consecrated bishop by St Peter.
According to his legend, in order to reach his church Saturninus had to pass before the capitol where there was a pagan altar. The pagan priests ascribed the silence of their oracles to the frequent presence of Saturninus, and one day they seized him and on his unshakeable refusal to sacrifice to the images they condemned him to be tied by the feet to a bull which dragged him about the town until the rope broke.
The site, said to be "where the bull stopped" is on the rue du Taur ("Street of the Bull"). The street with the Mithraic name is one of the original Roman cross streets running straight from the Capitole now to the Romanesque basilica honoring St. Saturnin ("St Sernin").